To laugh and talk about a person or idea in a way that shows that you think they are stupid or silly. (Cambridge Dictionary)
An expression of scorn, derision, or contempt: Gibe. (Merriam – Webster)
An object of scorn, mockery, or derision. (Merriam – Webster)
If you scoff at something, you speak about it in a way that shows you think it is ridiculous or inadequate. (Collins Dictionary)
If you scoff food, you eat it quickly and greedily. (Collins Dictionary)
Speak to someone or about something in a scornfully derisive or mocking way. (Oxford Dictionaries)
Scoff. LELB Society
Meaning of scoff. Wordpandit.